Cross winding apparatus for textile drawing frames



Dec. 20, 1960 G. WERNER 2,964,898

CROSS WINDING APPARATUS FOR TEXTILE DRAWING FRAMES Filed March 13, 19592 Sheets-Sheet 2 PIC-3.4.

INVENTOR GUNTHER WERNER ATTORNEY$ CROSS'WINDTNG APPARATUS FOR TEXTILEDRAWING FRAMES Gunther Werner, Reinbek, Hamburg, Germany, assignor toHanseatische Motoren-Gesellschaft m.b.H., Hamburg-B ergedorf, GermanyFiled Mar. 13, 1959, Ser. No. 799,136 Claims priority, applicationGermany Apr. 23, 1958 8 Claims. (Cl. 57- 34) The present inventionrelates to improvements in cross winding apparatus for textile drawingframes and is par- 2,964,898 Patented Dec. 20, 1960 "ice . 2 of rubberor synthetic material or a steel strip, is guided over four reverser orsupport sprocket wheels or pulleys 2a, 2b, 20, 2d arranged injfsuch amanner that the axes ofthe wheels lie at the corners'of a four-sidedfigure which maybe a rectangle 'or preferably a square or parallelogramwith the runs of the transmission element ticularly concerned with meansfor imparting a false twist to the sliver in production of crosswindings and which provides substantiabtechnical advantages incomparisonwith the known devices of this character.

Such devices are known in the art inwhich a cross winding is produced bythe fact that the winding is formed on two balling head rollers ordriving rollers or on one balling head roller or driving roller whereina tube for imparting a false twist changes its position and during thechanging movement also executes a rotary movement. In most cases thereversal in rotation of the false twist tube occurs at the end positionsof the change or feed movement, i.e. at the two ends of the coil bobbinorball to be formed. The reversal in the rotation of the false twisttube at these dead centres results, however, in the formation of a softwinding at these points since the sliver to be wound receives no falsetwist at this point. Attempts have therefore been made to offset thereversal point of the rotary movement of the false twist tube from theend points of the change or feeder stroke.

In order to avoid the considerable complication hitherto involved in theprovision of such false twist tubes executing a change movement theinvention provides that the drive for an actuating element producing thetwist movement and the change movement is effected by means of anendless belt or chain drive which is guided over reverser rollers insuch manner that the component of the direction of driving movement foreffecting the rotary movement of the false twist tube and the componentof the driving movement producing the change motion are arranged at anangle one to the other so that the reversal of the twist movement iseffected before the reversal of the change movement.

One constructional example of the invention is shown by way of exampleon the accompanying drawing,

Figure 1 is a longitudinal cross-sectional view taken on line 1a1a ofFigure la looking in the direction of the arrows to illustrate variousstructural details of the invention.

Figure 1a is a side elevational view of the device showing the casing insection to illustrate the sprocket chains or flexible elements andsprocket pulleys therefor.

Figure 2 is an end elevational view of the mechanism showing the samearranged to traverse the filament or sliver on a winding bobbin.

Figure 3 is an enlarged detail view of the chain operated slide movablein the guide frame end;

Figure 4 is a cross-sectional view taken on line 4--4 of Figure 3illustrating the manner in which the transmission elements or chains areconnected to the slide in the guide frame.

The mechanism provides a rectilinear guide 5 movably mounted forreciprocable movement on spaced parallel guide rods 6 and 6'.

In the embodiment shown on the drawings an endless transmission element1 which may be a chain or a belt extending obliquely to the parallelguide bars 6 and 6'.

- The transmission element 1 embodies aprojecting pin 3 rotatablysupported in a slide block 4 which follows the path of the transmissionelement as it traverses the reversal points marked 1a, 1b, 1c, and 1d.During this movement the slide block 4 reciprocates in the rectilinearguide 5 and moves this backwards and forwards on the slide support rods6 and 6'.

A falsestwist tube 7 serving as a guide for the sliver 14-passingtowards the winding 15 shown in conventional form 'is rotatablysupported on the guide 5 and receives a rotary movement by means of asprocket wheel or pulley 8 and an endless transmission element such as achain' 9. passing over the reverser wheel 10 and also connected to theslide block 4 by a pin 3. The reversal in the rotary direction of thefalse twist tube is effected at the'reversal points 1b and 1d while thereversal of the change or feed motion of the tube 7 is effected by thehorizontal component of movement of the slide block 4 at the reversalpoints 1a and 1c, the spacing of which corresponds to the width of thewinding required.

In order to secure a satisfactory operation of the device it isconvenient as shown in Fig. 2 to drive the slide block 4 by means of twoparallel chains or the like 1 and 1 the drive of which is effected fromthe shaft 13 by means of gear wheels 11 and 11 providing a transmissionto the gear wheels 12, 12 on the shafts carrying the pulleys 2c.

. The invention includes the provision of means for varying thedirection and mutual angle of the two components of movement so as tocorrespond to any particular requirements and for this purpose thesupport wheels or pulleys may be mounted on adjustable carriers.

What I claim is:

1. In a textile drawing frame means for imparting a false twist to afibre sliver, comprising a traversing feeder tube, means to impart achange movement to the tube during the traversing movement of said tube,means to rotate the tube in one direction and the other successively, anendless transmission element guided over a plurality of reverser pulleyswith the runs extending obliquely to the traversing movement of saidtube, means on said transmission element to impart a rotary false twistmovement to the feeder tube and also a translatory movement thereto bothsuch movements being of a reciproca tory character with reversal ofdirection at different points in the travel of said last named means.

2. Driving means for a false twist tube in a winder for a textiledrawing frame in which the tube executes a reciprocatory change movementand during the course of a movement in each direction rotates in onedirection and the other, comprising an endless transmission element, aplurality of reverser pulleys for said element positioned to cause thebelt to follow the shape of a closed figure having two obliquelydirected sides, a driver on said element, follower means engaged by saiddriver and means whereby said follower means transmits the changemovements to the false twist tube and additionally transmits rotarymovement successively in opposite directions during the course of eachchange movement.

3. Driving means for a false twist tube in a winder for a textiledrawing frame comprising a winder support, a false twist tube throughwhich a fibre sliver to be wound is passed towards the winder support toproduce a winding thereon, a reciprocable support for said falsesupport, a die block slidably'mounte'd on said support;

a flexible endless transmission element in a plane parallel to saidsupport, a plurality of guide pulleys for said transmission elements,said guide pulleys positioned to cause the endless transmission elementto be disposed in the form of a closed figure every side of which isdisposed obliquely to the supporL means on said transmission elementproviding an operative connection therewith to the die block so that thelatter causes reciprocation of the carrier and imparts a change movementto the false twist tube and simultaneously imparts a dis placement tothe die block along said support, and operative connection means betweensaid die block and the false twist tube so that rotary motion isimparted thereto in the course of the change movement, reversal in thedirection of rotation of the twist tube being timed to occur during thecourse of the change movement.

4. Driving means as claimed in claim 3 wherein the die block is slidablymounted in a slot in the support.

5. Driving means according to claim 4 wherein the die block isoperatively connected to the twist tube by means of a further flexibletransmission element.

6. Driving means according to claim 3 wherein the support is slidablymounted on guide rails so that the and drivingly engaging said feedertube, an endless transmissionelement guided over a plurality of pulleyswith the runs extending in a direction oblique to the direction oftraversing movement of said rectilinear guide, a slide block mounted insaid rectilinear guide operably connected with said flexible element andsaid transmission element, and-means for driving said transmissionelement whereby said rectilinear guide will be moved to and fro and saidfeeder tube will be rotated in reverse directions during its travelbetween the limits of said traversing motion.

8. In a textile drawing frame for imparting a false twist to a fibersliver, comprising a rectilinear guide movtwist tube moves backwards andforwards to an extent determined by the spacing of two of the guidepulleys to provide the change movement for effecting a cross winding,and the die block moves relatively to the support at right angles to themovement of said support on the rails,

the reversal of the movement of the die block occurring able in adirection to traverse a fiber on a bobbin, a rotary feeder tube mountedon said rectilinear guide, pulley means on the other end of saidrectilinear guide, an endless flexible element arranged over said pulleymeans and drivingly connected with said rotary feeder tube, a series ofpulleys arranged adjacent said rectilinear guide with one set of pulleysarranged in horizontal alignment and the other set of pulleys arrangedin vertical alignment, an endless transmission element trained over saidpulleys, a block slide in said rectilinear guide movable longitudinallythereof, means connecting said block slide to said flexible element,means connecting said block slide to said transmission element and meansfor driving said transmission element whereby said rectilinear guidewill be moved to and fro to feed a sliver and traverse the same on abobbin with rotation of said rotary feeder tube occurring simultaneouslyduring the traversing movement and rotating in first one direction andthen the other from a central point along the path of said traversingmovement and between the limits thereof.

References Cited in the file of this patent UNITED STATES PATENTS

